CN101869728A

CN101869728A - Pulsating portal blood pump and manufacturing method thereof

Info

Publication number: CN101869728A
Application number: CN201010189394A
Authority: CN
Inventors: 曹罡; 刘阳; 宋永春
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-01
Filing date: 2010-06-01
Publication date: 2010-10-27

Abstract

The invention relates to a technology for treating portal hypertension, i.e. a pulsating portal blood pump and a manufacturing method thereof. The pulsating portal blood pump is a high-elasticity balloon type blood pump device of a valve with a single flow direction. A ball pump which has an active blood pumping function and contains a T type pipe of a one-way valve is adopted and is arranged in the portal vein, a low-frequency oscillation AC coil is installed outside the body, and the movement of the ball pump is controlled by an electromagnetics principle, thereby achieving the aims of pumping the blood flow of a portal system, reducing and relieving the portal hypertension, pressurizing the inside of the liver simultaneously, supplying blood, increasing the blood supply of the liver and improving the function of the liver. In the invention, a balloon is formed by adopting a casting mold of high-elasticity silica gel, has favorable elasticity and ensures the pumping effect of the blood of the portal system; and an inner surface heparin coating technology is used, so that the pulsating portal blood pump has the effect of resisting thrombosis in long-time use. By using the invention, the contraventions of lowering the pressure of the portal vein and enhancing the blood flow flowing into the liver in the treatment of the portal hypertension are solved, and an effective novel approach is provided for the treatment of the portal hypertension.

Description

A kind of pulsating portal blood pump and preparation method thereof

Technical field the present invention relates to a kind of portal hypertension therapy equipment, specifically a kind of pulsating portal blood pump and preparation method thereof.

The surgical means that background technology is treated portal hypertension associated with liver cirrhosis at present has: disconnection, bypass, shunting add disconnection, TIPPIS, liver transplantation etc., in these methods, are optimum selection with the liver transplantation therapy of removing the cause of disease.Yet because economy, reason or other reasons, a large amount of liver cirrhosis patients can't be accepted Liver Transplantation for Treatment; Moreover the most liver cirrhosis patient of China comes from hepatitis virus, still has very high hepatitis risk after the liver transplantation, has hardened once more possibility.Therefore, there is very big difficulty in the Liver Transplantation for Treatment portal hypertension associated with liver cirrhosis.

In the surgical operation of tradition portal hypertension associated with liver cirrhosis, disconnection is most widely used, and it is meant: excise spleen, cut off at the bottom of the stomach and the cirso-blood vessel around the distal esophagus.Its advantage is that short-term is prevented hemorrhage, and it is few the hepatic coma situation to occur; Shortcoming is that varicosis at a specified future date is recovered, and is hemorrhage once more inevitable.

Bypass is another kind of traditional method, promptly by different modes the blood flow of portal system is introduced postcava (vein that pressure is minimum), effectively reduces portal venous pressure, effectively reduces the varicose vascular pressure immediately.Its advantage is, reduce at the bottom of the stomach for a long time and distal esophagus around the cirso-vascular pressure, make it to subside, permanently effective control digestive tract hemorrhage; Shortcoming is to descend greatly into hepatic blood flow, is easy to occur hepatic coma, causes death.At present, liver inside door venous lumen venous shunt art (TIPPIS) also has a large amount of trials, but it has a strong impact on liver blood flow, and early stage hepatic coma takes place frequent.

More than, all methods except that liver transplantation at the hemorrhage problem of gastroesophageal varices, do not have any method and can improve the portal vein flow that flows into liver, do not have the metabolic function that any method can improve liver.

Summary of the invention the objective of the invention is to, deficiency at traditional portal hypertension associated with liver cirrhosis operative treatment means, a kind of pulsating portal blood pump is provided, it is placed in the portal vein intracavity of liver cirrhosis patient, by to liver pressurized delivered and periphery suction blood, go into liver blood stream and reduce side shoot pressure to improve, reach the therapeutic effect of preventing and treating hepatic coma, digestive tract hemorrhage.

The present invention is achieved in that this pulsating portal blood pump, is made up of in two sub-sections part and external body in the body:

Part in the body has a ball pump that contains check valve T-shape pipe, and the ball pump two sides is fixed a ferromagnetism pole piece and a stainless steel core respectively; Outer body is solenoid, by battery-powered, and control its current loop by contact apparatus and is interrupted connection.

Described ball pump selects for use high-tension silica gel casting mold to make, and ball pump inner surface is carried out heparin coating handle, and makes it have good antithrombotic and forms effect; The ferromagnetism pole piece on sacculus two sides, stainless steel core adopt casting method to fix.Described ferromagnetism pole piece is a permanent magnet, more than its magnetic induction 1000 Gausses.

Using method of the present invention: abdomen is gone in operation, exposes portal vein, opens the portal vein sheath on coronary vein of stomach, behind the vertical shape thorn mouth, and the T-shape pipe galianconism of inserting part in the body, the bicker of not damaged suturing with thread management thorn.After observing ne-leakage, ball pump steel core face sutured is in the stomach wall inner face.At its external corresponding skin surface, labelling is also settled the electromagnetic circuit of outer body.

During use, open electromagnetic circuit,, attract Magnet to finish the expansion and the contraction of sacculus by the non-stop run of electric magnet.External performance test satisfies: the pump blood volume of whenever fighting 7.0 ± 0.4ml, the maximum pump of whenever fighting goes out to press 53.5 ± 1.7cmH2O, chooses 30 times/min of frequency of oscillation, displacement 220 ± 12ml/min under the atmospheric pressure.

The present invention's pulsating portal blood pump is a kind of people's construction equipment that is similar to small-sized heart, is placed in the portal vein intracavity, to the blood supply of sclerosis liver internal pressurization; The one-way flow of equipment and beat in the diastole process, reached effect from periphery cirso-blood drawing, effect is equal to bypass, has reduced the pressure of esophagus and stomach bottom side branch effectively.Like this, in the process of portal vein pump work, improve on the one hand and go into liver blood stream, improve the metabolic function of liver greatly; Effectively reduce the pressure of esophagus and stomach bottom side branch on the other hand, controlled digestive tract hemorrhage.Under the final situation that realizes non-liver transplantation, not only improved the liver metabolism function but also prevented the therapeutic effect of digestive tract hemorrhage.

Description of drawings

Part sketch map in Fig. 1 body of the present invention;

This practical outer body sketch map of Fig. 2;

This practicality of Fig. 3 install and use sketch map.

Among the figure, 1 silica gel sacculus; 2 permanent magnets; 3 unidirectional flap valves; 4 T-shape arms; 5 stainless steel cores; 6 shell fragments; 7 contacts; 8 solenoids; The 9 spherical pump housings are inner to be divided; 10 stomach walls; 11 main portal veins; 12 gastric fundus veins; 13 splenic veins; 14 superior mesenteric veins; 15 ball pump outer bodies.

The specific embodiment is below in conjunction with embodiments of the invention of accompanying drawing narration

Fig. 1 is the interior part 9 of the body of present embodiment.Silica gel sacculus 1 thickness 0.4cm, volume 10ml, silica gel intensity 1000N/m; T-shape tube thickness 0.2cm, internal diameter 0.2cm, silica gel intensity 3000N/m; Its inner surface carries out heparin coating.A permanent magnet 2 and a stainless steel core 5 are fixed in sacculus 1 two sides casting mold respectively.The about 16cm of the area of permanent magnet wherein ², about 11000 Gausses of magnetic induction.

Fig. 2 is the outer body 15 of present embodiment.It is fixed in the box, is an electric magnet by set of cells (30 volts of voltages) power supply.Wherein core material is selected mild steel for use, the about 1.4cm of its diameter; The conductor material of solenoid 8 is selected the enamel-covered wire of diameter 0.18mm for use, and coil turn is 557 circles.In current loop, fixed metal clips 6 of an end and contact 7 devices have been installed additional.Under quiescent condition, shell fragment 6 contacts with contact 7 and forms the loop; When circuit was connected, work of electromagnet attracted shell fragment 6 that it is separated with contact 7, thus automatic close current path; After current path disconnected, shell fragment 6 resilience automatically with contact 7 contacts, connected current path once more.

Fig. 3 has shown the sketch map of installing and using of present embodiment.Among the figure, the 15th, the ball pump outer body is placed in stomach wall 10 places; The 9th, the spherical pump housing is inner to be divided; 11 main portal veins; 12 gastric fundus veins; 13 splenic veins; 14 superior mesenteric veins.After this device was installed, the interruption folding of the inner branch of body satellite dispatch from foreign news agency flux path under the effect of magnetic attraction, was finished and is shunk and expansion action.

Claims

1. pulsating portal blood pump is characterized in that, is made up of part and outer body in the body:

Part in the body has a sacculus (1) that contains check valve T-shape pipe, and the sacculus two sides is fixed a ferromagnetism pole piece (2) and a stainless steel core (5) respectively; Outer body for solenoid (8), by battery-powered, and controlled its current loop by contact apparatus and is interrupted connection.

2. according to the method for production of claims 1 described pulsating portal blood pump, it is characterized in that: said sacculus (1) is to make with high-tension silica gel casting mold, and ball pump inner surface is carried out heparin coating handle; The ferromagnetism pole piece (2) on sacculus (1) two sides, stainless steel core (5) adopt casting method to fix.

3. according to claims 1 described pulsating portal blood pump, it is characterized in that: said ferromagnetism pole piece is a permanent magnet, more than magnetic induction 11000 Gausses.